Productive and Non Productive coughs are very similar and as
such have similar treatments. The best way of dealing with these coughs is
to aid the natural coughing process which is attempting to remove the
phlegm from the chest. This is done by use of agents which break the mucus
up and therefore make it easier to cough the mucus off the chest. Another
ingredient often added to products for chesty coughs is
Cetylpyridinium
which has a breath freshening action since catarrh can affect the odour of
the breath.
There are four agents available which have expectorant properties: